The typical asking rate per listing is in the $0's per square foot per year. The Toronto submarket is going through a decline in rates. In the last 3 months, the median rate fell $84 per sqft per year. That's a 100% decline in rent.
In the last 90 days, 10 listings have been posted online, which means new listings are probably going fast. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around sqft. Most buildings in this region are around 8 stories. Most buildings in this area were built in 1980 and are Class A.